Book-cover



(No Model.)

J. M. BRONSON.

BOOK COVER.

Patented July 19, 1887.

INVENTOR WITNESSES x9. 19. Jim F 45W ATTORNEYS.

N. PETERS. Phnln'lillwgmphqr. Walhington. D. C.

UNITED STATES PATENT OFFICE.

J AMES M. BRONSON, OF KANSAS CITY, MISSOURI.

BOOK-COVER.

SPECIFICATION forming part of Letters Patent No. 366,918, dated July 19,1887,

Application filed August 17. 1886. Serial No. 311,142. (No model.)

To all whom it may concern.-

Be it known that I, JAMES M. BRONSON, of Kansas City, in the county ofJackson and State of Missouri, have invented a new and ImprovedBook-Cover, of which the following is a full, clear, and exactdescription.

Reference is to be had to the accompanying drawings, forniinga partofthis specification, in which similar letters of reference indicatecorresponding parts in all the figu res.

Figure 1 is a perspective view,with parts broken away, of a bookprovided with my improved cover. Fig. 2 is an end view of the same,showing the book open; and Fig 3 is an end View showing the book closed.Fig. 4 is a sectional view of the hinge of the cover.

The book-back A is made in the form of a segment of a hollow cylinder inthe usual way, and the edges B of the book-covers O are connected withthe back by flexible strips a of leather or other suitable material. Thebody 1) of the book is made in the usual way, and each cover 0 isprovided with a metal plate, E, secured to its inner surface andprojecting beyond the inner edge, B, of the cover. The projecting edgeof each strip is inelosed between strips 0 c of parchment glued togetherand to the metal plate and glued to the cover. The parchment is seen redto the back of the body D of the book and forms the connection betweenthe body and cover. The hinge-joint E thus made allows the body of thebook to open,- so as to cause the leaves to lie flat down upon thecovers, as shown in Fig. 2.

The covers Got the book are connected with each other at the ends of thebook-body by a stay consisting of a spiral spring, d, connected withplates 6, secured to the covers by links f and clips y.

By means of my improvement the book is allowed to open perfectly flatwithout straining thejoints of the book or cover, the springs causingthe drawing together of the inner edges of the covers and the consequentelevation of the middle portion.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. The combination, with the book-covers, the back and the flexibleconnections between the back and covers, of the stilt plates or stripsconnecting the covers and body of the book and a stay connecting thecovers near the back, substantially as set forth.

2. The c0mbination,with the covers and the back of the book, of anelastic stay connecting the covers near the back, substantially as setforth.

3. The combination, with the back A and covers 0, of the plates 0,springsd, linksf, and clips 1, substantially as specified.

JAMES M. BRONSON.

YVitnesses:

R. M. RIGBY, PHILIP H. KENNEDY.

